公开(公告)号：US20230383032A1

公开(公告)日：2023-11-30

申请号：US18449061

申请日：2023-08-14

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO ,  Hayato TSUDA ,  Takashi SEKIGUCHI

IPC分类号： C08F214/26 ,  C09K3/10 ,  F16J15/10

CPC分类号： C08F214/262 ,  C09K3/1009 ,  F16J15/10

摘要： There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 2.26 to 2.75 mol % with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.0 to 11.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

公开(公告)号：US20160108159A1

公开(公告)日：2016-04-21

申请号：US14892844

申请日：2014-04-30

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Takashi SEKIGUCHI ,  Manabu FUJISAWA ,  Ryouichi FUKAGAWA ,  Takeshi SHIMONO

IPC分类号： C08F214/26 ,  C08F214/28

CPC分类号： C08F214/26 ,  C08F4/34 ,  C08F14/18 ,  C08F14/24 ,  C08F14/26 ,  C08F214/24 ,  C08F214/242 ,  C08F214/245 ,  C08F214/262 ,  C08F214/265 ,  C08F214/28

摘要： The present invention aims to provide a method of producing a fluoropolymer, especially a fluoropolymer essentially including a tetrafluoroethylene or chlorotrifluoroethylene unit, at a higher polymerization rate with improved efficiency, the method being capable of improving the moldability in extrusion molding and suppressing discoloration. The method of producing a fluoropolymer of the present invention includes producing a fluoropolymer by polymerizing tetrafluoroethylene or chlorotrifluoroethylene in the presence of a peroxydicarbonate. The peroxydicarbonate is represented by the formula: R—O—C(═O)—O—O—C(═O)—O—R wherein R's may be the same as or different from each other and individually represent a C4 alkyl group or alkoxy alkyl group.

摘要翻译： 本发明的目的在于提供一种以更高的聚合速率生产含氟聚合物，特别是基本上包含四氟乙烯或氯三氟乙烯单元的含氟聚合物的方法，该方法能够提高挤出成型中的成型性和抑制变色。 本发明的含氟聚合物的制造方法包括在过氧化二碳酸酯的存在下聚合四氟乙烯或氯三氟乙烯来制造含氟聚合物。 过氧化二碳酸酯由下式表示：R-O-C（= O）-O-O-C（= O）-O-R，其中R可以彼此相同或不同，并且各自表示C4烷基 或烷氧基烷基。

公开(公告)号：US20230069795A1

公开(公告)日：2023-03-02

申请号：US17976939

申请日：2022-10-31

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Ryouichi YANO ,  Tatsuya FUNAOKA ,  Takahiro KITAHARA ,  Takashi SEKIGUCHI ,  Kazunobu UCHIDA ,  Yuuko TAKANO

IPC分类号： C08F214/26 ,  C08F210/02 ,  C08J5/18 ,  H01B3/44

摘要： An ethylene/tetrafluoroethylene copolymer satisfying the following formula (1): 75≤tan δ(60)/tan δ(5)×100≤225  (1) wherein peak intensities, determined by Fourier transform infrared spectroscopy, of vibrations derived from a —CF2H group, a —CF2CH2COF group, a —COF group, a —COOH group, a dimer of a —CF2COOH group and a monomer of a CF2CH2COOH group, a —COOCH3 group, a —CONH2 group, and a —CH2OH group satisfy the following formula (2): PIA/(PIB+PIC+PID+PIE+PIF+PIG+PIH)≥0.60  (2) wherein the loss tangents (tanδ) and peak intensities (PI) are as defined herein.